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Title: NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model

Abstract

Baryon and lepton numbers being accidental global symmetries of the Standard Model (SM), it is natural to promote them to local symmetries. However, to preserve anomaly-freedom, only combinations of B–L are viable. In this spirit, we investigate possible dark matter realizations in the context of the U(1) B-L model: (i) Dirac fermion with unbroken B–L; (ii) Dirac fermion with broken B–L; (iii) scalar dark matter; (iv) two-component dark matter.We compute the relic abundance, direct and indirect detection observables and confront them with recent results from Planck, LUX-2016, and Fermi-LAT and prospects from XENON1T. In addition to the well-known LEP bound M Z' /g BL 7 TeV, we include often ignored LHC bounds using 13 TeV dilepton (dimuon + dielectron) data at next-to-leading order plus nextto- leading logarithmic accuracy. We show that, for gauge couplings smaller than 0.4, theLHCgives rise to the strongest collider limit. In particular, we find M Z' /g BL > 8.7 TeV for g BL = 0.3. We conclude that the NLO+NLL corrections improve the dilepton bounds on the Z mass and that both dark matter candidates are only viable in the Z' resonance region, with the parameter space for scalar dark matter being fully probed bymore » XENON1T. Lastly, we show that one can successfully have a minimal two-component dark matter model.« less

Authors:
 [1];  [2];  [3]
  1. Westfalische Wilhelms Univ., Munster (Germany). Inst. for Theoretical Physics
  2. Southern Methodist Univ., Dallas, TX (United States)
  3. Max Planck Inst. for Nuclear Physics, Heidelberg (Germany). Particle and Astroparticle Physics Division
Publication Date:
Research Org.:
Southern Methodist University, Inc., Dallas, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1358651
Grant/Contract Number:
SC0010129; 05H15PMCCA
Resource Type:
Journal Article: Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 77; Journal Issue: 5; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Klasen, Michael, Lyonnet, Florian, and Queiroz, Farinaldo S. NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model. United States: N. p., 2017. Web. doi:10.1140/epjc/s10052-017-4904-8.
Klasen, Michael, Lyonnet, Florian, & Queiroz, Farinaldo S. NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model. United States. doi:10.1140/epjc/s10052-017-4904-8.
Klasen, Michael, Lyonnet, Florian, and Queiroz, Farinaldo S. 2017. "NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model". United States. doi:10.1140/epjc/s10052-017-4904-8.
@article{osti_1358651,
title = {NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model},
author = {Klasen, Michael and Lyonnet, Florian and Queiroz, Farinaldo S.},
abstractNote = {Baryon and lepton numbers being accidental global symmetries of the Standard Model (SM), it is natural to promote them to local symmetries. However, to preserve anomaly-freedom, only combinations of B–L are viable. In this spirit, we investigate possible dark matter realizations in the context of the U(1)B-L model: (i) Dirac fermion with unbroken B–L; (ii) Dirac fermion with broken B–L; (iii) scalar dark matter; (iv) two-component dark matter.We compute the relic abundance, direct and indirect detection observables and confront them with recent results from Planck, LUX-2016, and Fermi-LAT and prospects from XENON1T. In addition to the well-known LEP bound MZ' /gBL 7 TeV, we include often ignored LHC bounds using 13 TeV dilepton (dimuon + dielectron) data at next-to-leading order plus nextto- leading logarithmic accuracy. We show that, for gauge couplings smaller than 0.4, theLHCgives rise to the strongest collider limit. In particular, we find MZ' /gBL > 8.7 TeV for gBL = 0.3. We conclude that the NLO+NLL corrections improve the dilepton bounds on the Z mass and that both dark matter candidates are only viable in the Z' resonance region, with the parameter space for scalar dark matter being fully probed by XENON1T. Lastly, we show that one can successfully have a minimal two-component dark matter model.},
doi = {10.1140/epjc/s10052-017-4904-8},
journal = {European Physical Journal. C, Particles and Fields},
number = 5,
volume = 77,
place = {United States},
year = 2017,
month = 5
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1140/epjc/s10052-017-4904-8

Citation Metrics:
Cited by: 8works
Citation information provided by
Web of Science

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  • Baryon and lepton numbers being accidental global symmetries of the Standard Model (SM), it is natural to promote them to local symmetries. However, to preserve anomaly-freedom, only combinations of B–L are viable. In this spirit, we investigate possible dark matter realizations in the context of the U(1) B-L model: (i) Dirac fermion with unbroken B–L; (ii) Dirac fermion with broken B–L; (iii) scalar dark matter; (iv) two-component dark matter.We compute the relic abundance, direct and indirect detection observables and confront them with recent results from Planck, LUX-2016, and Fermi-LAT and prospects from XENON1T. In addition to the well-known LEP boundmore » M Z' /g BL 7 TeV, we include often ignored LHC bounds using 13 TeV dilepton (dimuon + dielectron) data at next-to-leading order plus nextto- leading logarithmic accuracy. We show that, for gauge couplings smaller than 0.4, theLHCgives rise to the strongest collider limit. In particular, we find M Z' /g BL > 8.7 TeV for g BL = 0.3. We conclude that the NLO+NLL corrections improve the dilepton bounds on the Z mass and that both dark matter candidates are only viable in the Z' resonance region, with the parameter space for scalar dark matter being fully probed by XENON1T. Lastly, we show that one can successfully have a minimal two-component dark matter model.« less
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